# How do you identify the important parts of #y= ½(x-4)(x+2)# to graph it?

##### 1 Answer

Oct 5, 2015

Graph

#### Explanation:

The important parts are:

a. x-coordinate of axes of symmetry and vertex:

y-coordinate of vertex:

b. y-intercept --> Make x = 0 -->

c. x-intercepts --> x = 4 and x = -2

graph{1/2(x - 4)(x + 2) [-10, 10, -5, 5]}